Method for the delivery of a multi-component reactive system to a molding operation
View Patent ↗Tapes comprising (A) a first ribbon comprising (1)(a) a polyolefin containing at least one silane functionality, and (1)(b) a hydroxy-terminated silicone polymer, or (2) a blend of a vinyl silane, polyolefin, organic initiator, e.g., peroxide, and a hydroxy-terminated silicone polymer, and (B) a second ribbon comprising a catalyst masterbatch, the second ribbon carried on the first ribbon, allow for the delivery of a consistent mixture of resin and catalyst to an injection molding machine.
1. An extruder feed tape comprising (A) a first ribbon having a thickness of 2-20 mm and comprising a crosslinkable resin, and (B) a second ribbon comprising a catalyst masterbatch, the second ribbon carried on the first ribbon and the crosslinkable resin and catalyst masterbatch reactive with one another under ambient conditions.
2. The tape of claim 1 in which the first ribbon comprises (1)(a) a polyolefin containing at least one silane functionality, and (1)(b) a hydroxy-terminated silicone polymer, or (2) a blend of a vinyl silane, polyolefin, organic initiator and a hydroxy-terminated silicone polymer.
3. The tape of claim 2 in which the first and second ribbons are in direct contact with one another.
4. The tape of claim 2 in which the first and second ribbons are separated by a third ribbon, the third ribbon comprising the polyolefin of the first ribbon but without the silane functionality.
5. The tape of claim 2 in which the first ribbon comprises a groove shaped and sized to receive and hold the second ribbon.
6. The tape of claim 2 in which the organic initiator is a peroxide.
7. The tape of claim 2 in which at least one of the first and second ribbons comprise micro-layers.
8. The tape of claim 2 further comprising a barrier layer intermediate of the first and second ribbons.
9. The tape of claim 2 in which the second ribbon is joined to the first ribbon with the assist of an adhesive.